Re: Optimize file renaming.

[Tomtom]

I think you could use sprintf like :

$result = sprintf("%07s", $name);

"%07d", since your new file names would always 7 characters long.

Update : too late :(

Update : As blazar said, "%07d" is wrong, I updated it to "%07s", which seems to work better : sorry for the mistake.

[blazar]

$ echo '1.png' | perl -lpe '$_=sprintf "%07d", $_'
0000001